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The SLF has developed a basis for measuring snow density using infrared light, with implications for climate and avalanche research. It will also enable more precise data from remote sensing, even in the case of satellite measurements.
Researchers at the WSL Institute for Snow and Avalanche Research (SLF) have developed the theoretical basis for a new method for determining snow density. "This is a key parameter in fields such as climate science and flood and avalanche forecasting," says SLF researcher Lars Mewes. Until now, though, determining the density of the snowpack layer by layer has been a laborious process. The new technique saves time and is also precise. Using the SnowImager developed at the SLF, it creates a high-resolution profile of the snowpack density, based on the scattering of near-infrared light within the snowpack.
From snow research to satellites
Mewes envisages other applications for his work beyond snow research: because his theory broadens our understanding of how light is scattered beneath the surface of objects, others can also benefit from his approach, explains the researcher. "In remote sensing, right through to satellite measurements, it's important to know how light is scattered beneath surfaces."
https://www.nature.com/articles/s42005-026-02490-1
https://www.slf.ch/en/news/new-theory-for-rapid-measurement-of-snow-density/ Media release on slf.ch
https://www.slf.ch/en/news/slf-obtains-patent-for-snowimager/ More about the SnowImager
https://www.wsl.ch/fileadmin/user_upload/WSL/Publikationen/DIAGONAL-WSL-Magazin/... News article in the SLF magazine “Diagonal”
Taking measurements using infrared: the prototype of the SnowImager in action.
Source: Bruno Augsburger
Criteria of this press release:
Journalists
Environment / ecology, Physics / astronomy
transregional, national
Transfer of Science or Research
English
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